OA is caused by joint damage. This damage can have a cumulative effect over time, which is why age is one of the main causes of the joint damage leading to OA. The older you are, the more repetitive stress you’ve had on your joints.
Other causes of joint damage include:
past injury, such as torn cartilage, dislocated joints, or ligament injuries
joint malformation
obesity
poor posture
Certain risk factors increase your chances of developing OA. They include:
having family with the condition, particularly parents or siblings
gender, with women having higher rates of OA than men
being at least 50 years old, according to the Arthritis Foundation
having undergone menopause
having an occupation that involves kneeling, climbing, heavy lifting, or similar actions
a history of injury
being overweight or having obesity
poor posture
having another medical condition that affects your joint health, such as diabetes or a different type of arthritis
Having OA in one part of your body also increases your risk of developing OA in other parts of your body. Learn more about possible causes of OA.